| Friday 9 May 2025 | |
| Events for day: Wednesday 13 December 2023 |
| 11:00 - 12:00 Wednesday Weekly Seminar - meeting Parton Distribution Functions and physical observables School PARTICLES AND ACCELERATORS Abstract: In this lecture, we will commence with a brief historical overview of the parton model. Subsequently, we will delve into the necessity for Parton Distribution Functions (PDFs), elucidating their significance in our understanding of particle physics. Following this, we will explore the impact of various experimental methodologies on the determination and refinement of PDFs. The subsequent topic will focus on the calculation of physical observables through the utilization of PDFs, shedding light on their crucial role in predicting and interpreting experimental outcomes. Lastly, we will delve into the diverse app ... 12:45 - 13:45 Geometry and Differential Equations Seminar Symplectic Calabi-Yau equation School MATHEMATICS Abstract:We go over the results of Tosatti-Weinkove on the symplectic Calabi-Yau equation. The problem is to find a J-compatible symplectic with prescribed volume form. 14:00 - 15:00 Combinatorics and Computing Weekly Seminar Open Neighborhood Location-domination and Identifying Codes School MATHEMATICS A set $ S $ of vertices of a digraph $ D $ is called an open neighborhood locating-dominating set if every vertex in $ D $ has an in-neighbor in $ S $, and for every pair $ u, v $ of vertices of $ D $, there is a vertex in $ S $ that is an in-neighbor of exactly one of $ u $ and $ v $. The smallest size of an open neighborhood locating-dominating set of a digraph $ D $ is denoted by $gamma_{OL}(D)$. We study the class of digraphs $ D $ whose only open neighborhood locating-dominating set consists of the whole set of vertices, in other words, $gamma_{OL}(D)$ is equal to the order of $ D $. We call those digraphs extremal. By considering ... 14:00 - 15:00 Weekly Seminar Spin Squeezing and the Quantum Phase Transition in Spin-1/2 Chains School QUANTUM PHYSICS AND MATTER Spin squeezing is a quantum phenomenon that reduces the quantum uncertainty in one component of the collective spin of an ensemble of particles with a spin. The quantum states obtained are called spin-squeezed states. Such states have been proposed for quantum metrology, to allow a better precision for estimating a rotation angle than classical interferometers. A coherent state is a quantum state that has the minimum quantum uncertainty allowed by the Heisenberg uncertainty principle, and it has a symmetric distribution of the quantum fluctuations in both components of the collective spin. In this talk, we show new findings on spin squ ... 17:30 - 19:00 Algebraic Geometry Biweekly Webinar Vector Bundles on Threefolds School MATHEMATICS In this talk, I will survey classification results for vector bundles on smooth threefolds over an algebraically closed field. I will start with classical results in the affine case, and then show how to complete the classification in that case. Then, I will pass to quasi-projective threefolds, focusing on the case of complex varieties. https://zoom.us/join Meeting ID: 9086116889 Passcode: 362880 Email: agnt@ipm.ir Venue: , (Zoom Lecture) ... |